For the past 3 weeks, I have been urinating a lot.. During the night I would never go to the bathroom but now I at least go 2-3 times and when I go I get nauseous too.. I can't be pregnant because I just ended my period even though it was a little different than before. Also I had gained like a lot of weight, my stomach is getting really big somehow. I had asked some people and they think it might be diebetes. I can't really go to the doctor right now because I don't really have a ride or the money.. Also I have been having hot flashes if that helps... what do you think could be wrong?

Frequent urination coupled with hot flashes does indeed sound like diabetes.

Time for a doctor's appointment.